LEESA A OLSON
NPI 1871331330
Assistant Behavior Analyst in Pasadena, CA

NPI Status: Active since July 18, 2024

Contact Information

177 E COLORADO BLVD STE 200
PASADENA, CA
ZIP 91105
Phone: (844) 669-7827

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Female
Assistant Behavior Analyst

About LEESA OLSON

This page provides the complete NPI Profile along with additional information for Leesa Olson, a provider established in Pasadena, California with a medical specialization in Assistant Behavior Analyst. The healthcare provider is registered in the NPI registry with number 1871331330 assigned on July 2024. The practitioner's primary taxonomy code is 106E00000X. The provider is registered as an individual and her NPI record was last updated one year ago.

NPI: 1871331330
Provider Name: LEESA A OLSON
Other Name: LEESA A ROBERTSON
Other Name Type: Former Name (1)
Gender: Female
Entity Type: Individual
Location Address: 177 E COLORADO BLVD STE 200 PASADENA, CA 91105
Location Phone: (844) 669-7827
Mailing Address: 177 E COLORADO BLVD STE 200 PASADENA, CA 91105
Mailing Phone: (844) 669-7827
Is Sole Proprietor?: Yes
Enumeration Date: 07-18-2024
Last Update Date: 09-11-2025
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Assistant Behavior Analyst
Taxonomy Code: 106E00000X
Type: Behavioral Health & Social Service Providers
Taxonomy Description: An assistant behavior analyst is qualified by Behavior Analyst Certification Board certification and/or a state-issued license or credential in behavior analysis to practice under the supervision of an appropriately credentialed professional behavior analyst. An assistant behavior analyst delivers services consistent with the dimensions of applied behavior analysis and supervision requirements defined in state laws or regulations and/or national certification standards. Common services may include, but are not limited to, conducting behavioral assessments, analyzing data, writing behavior-analytic treatment plans, training and supervising others in implementation of components of treatment plans, and direct implementation of treatment plans.

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1871331330, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 14 → 1 + 4

Pos 4

Unchanged

Pos 5

Doubled → 6

Pos 6

Unchanged

Pos 7

Doubled → 2

Pos 8

Unchanged

Pos 9

Doubled → 6

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 7 → 14 → 5 3 → 6 1 → 2 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 8 + 1 + 4 + 1 + 6 + 3 + 2 + 3 + 6 + 24 = 60

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 60 is 60. The difference is the calculated check digit.

60 - 60 = 0

This NPI is valid

The calculated check digit is 0, which matches the last digit of 1871331330.